Sorry for the late response. The drives were never detected again by any computer Bios via SATA. they would just not show up as a bootable disk or any disk for that matter. Almost like the sata power cable was not working. I thought maybe the sata power cable run had gone bad but it works fine with new drives. I put them in some usb c sleds and wiped them on a mac. Put new SSD's in the computer the Crucial drives had been living. Going to just use them as external drives via USB for now.
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Core i7-2600k GA-Z68XP-UD3 Rev rev 1.3 - U1J UEFI Firmware CT500MX200SSD1 -GPT, Windows 10 Pro CT500MX200SSD1 - NTFS, Storage volume CT512M550SSD3 - NTFS , Storage volume Bios - Safe boot on CSM - Off I have been running windows 10 on this machine with the same configuration for a long time. I recently installed the Crucial executive storage and used it to update the crucial ssd drives in the system. The two MX200 drives succefully updated to MU04. One of them being the Windows 10 boot drive. After rebooting with no changes to Bios settings, the two MX200 disks were no longer listed in the Priorty list , or the Boot Menu. The two drives do show up in the ATA port information list. Enabling CSM to show Legacy drives will list the drives in the boot options, but will not successfully find and boot partitions on the disk in the mode. If I connect to another pc or mac via USB, the drives come up with all data intact. Power cycling the SSDs, and resetting bios to default has no effect. The other Crucual CT512M550SSD3 msata disk shows in the boot list just fine after the firmware udapte. Any idea whats going on with these to MX200 drives? Why would the bios update remove the UEFI compatability?
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